Electronic device and wireless power receiver equipped in the same

• US 9,799,445 B2
• Filed: 01/26/2016
• Issued: 10/24/2017
• Est. Priority Date: 10/18/2011
• Status: Active Grant

• Current Assignee: Nera Innovations Limited (Atlantic IP Services Limited)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Lee, Jung Oh
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): WILLOUGHBY, TERRENCE RONIQUE
• Application Number:
  US15/006,633
• Publication Number:
  US 20160141098A1
• Time in Patent Office: 637 Days
• Field of Search: 307104
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A wireless power receiver for receiving power from a wireless power transmitter using resonance according to the embodiment includes a reception resonant coil resonance-coupled with a transmission resonant coil of the wireless power transmitter for receiving the power, a reception induction coil coupled with the reception resonant coil for receiving the power, and a connecting unit, and the reception resonant coil includes at least one conductive line having one end and an opposite end being open with each other, and the connecting unit couples the one end and the opposite end of each conductive line with each other so that the reception resonant coil forms a closed loop.

Claims

1. A portable device for receiving power from a wireless power transmitter, the portable device comprising:

a reception resonant coil resonance-coupled with a transmission resonant coil of the wireless power transmitter for receiving the power, the reception resonant coil including a closed loop conductive line, wherein the conductive line has a first output line and a second output line being separated from each other;

a connecting unit including a first connector and a second connector, wherein the first output line is disposed in the first connector and the second output line is disposed in the second connector, wherein when the first and second connectors are connected to each other so that the first output line and the second output line are connected to each other; and

wherein the reception resonant coil receives the power from the transmission resonant coil via the connected conductive line; and

an auxiliary connecting unit including a first auxiliary connector and a second auxiliary connector, wherein each of the first and second auxiliary connectors comprises a permanent magnet having different polarities.

2. The portable device of claim 1, wherein the first and second connectors are connected via an auxiliary connecting unit for a connection of the conductive line, and

wherein the auxiliary connecting unit maintains the connection of the conductive line.

3. The portable device of claim 1, wherein the connecting unit comprises an elastic member.

4. The portable device of claim 3, wherein the elastic member comprises a polymer resin or a resin composite.

5. The portable device of claim 1, wherein the reception resonant coil comprises an inductor and a capacitor.

6. The portable device of claim 5, wherein the capacitor includes a variable capacitor for matching resonant frequency with the transmission resonant coil.

7. The portable device of claim 1, further comprising

a reception induction coil coupled with the reception resonant coil for receiving the power,

wherein the reception induction coil comprises an inductor and a capacitor.

8. The portable device of claim 7, further comprising a rectifier circuit converting AC power received from the reception induction coil into DC power and transferring the DC power to a load.

9. The portable device of claim 1, wherein a radius of the reception resonant coil is greater than a radius of the transmission resonant coil.

10. A method for receiving wireless power from a wireless power transmitter with a portable device comprising a reception resonant coil including a closed loop conductive line which has a first output line and a second output line being separated from each other, the method comprising:

determining whether a first connector and a second connector are connected to each other so that the reception resonant coil forms a closed loop,

wherein the first output line is disposed in the first connector and the second output line is disposed in the second connector, and

wherein the first-end of the conductive-line output line and the second-end of the-conductive fee output line are connected by the first connector and the second connector; and

receiving the power via the conductive line of the reception resonant coil from a transmission resonant coil of the wireless power transmitter if the first output line and the second output line are connected by the first connector and the second connector,

wherein the reception resonant coil is resonance-coupled with the transmission resonant coil;

wherein the first and second connectors are connected using via an auxiliary connecting unit for a connection of the conductive line,

wherein the auxiliary connecting unit includes a first auxiliary connector and a second auxiliary connector, and

wherein each of the first and second auxiliary connectors comprises a permanent magnet haying different polarities.

11. The method of claim 10, and wherein the auxiliary connecting unit maintains the connection of the conductive line.

12. The method of claim 10, wherein the connecting unit comprises an elastic member.

13. The method of claim 12, wherein the elastic member comprises a polymer resin or a resin composite.

14. The method of claim 10, wherein the reception resonant coil comprises an inductor and a capacitor.

15. The method of claim 14, wherein the capacitor includes a variable capacitor for matching resonant frequency with the transmission resonant coil.

16. The method of claim 10, wherein a radius of the reception resonant coil is greater than a radius of the transmission resonant coil.